Motion-transmitting mechanism.



S. P-. THRASHER.

MOTION TRANSMITTING MECHANISM.

APPLICATION FILED DEC. I4, I9I4. 1,1 58,588. Patented Nov. 2, 1915.

3 SHEETS-SHEET I- S. P. THRASHER.

MOTION TRANSMITTING MECHANISM.

APPLICATION FILED DEC.14,1914.

1.1 58,588. 'Patented Nov. 2', 1915. l 30 3 s'HEETs-SHEET 2.

S. P. THRASHER. y MOTION TRANSMITTING MECHANISM.

APPLICATION FILED DEC. I4, 1914. 1,158,588. Patented Nov. 2, 1915.

3 SHEETS-SHEET 3.

COLUMBI PMNOURAPH c0..wAsNlNOTON. D. c.

SAMUEL P. THRASHER, OF CHICAGO, ILLINOIS.

MOTION-TRANSMITTING MECHANISM.

Specification of Letters Patent.

Patented Nov. 2, 1915.

Application filed December 14, 1914. Serial No. 877,031.

T0 all ywhom t may concern:

Be it known that l, SAMUEL P. THnAs-IER, citizen et the United States,residing at Chicago, in the county ot Cook and State of Illinois, haveinvented a certain new and useful Improvement in Motion-TransmittingMechanism, of which the following is a full, clear, concise, and exactdescription, reference being` had to the accompanying drawings, forminga part et this specification.

My invention relates to motion transmitting mechanism and finds a usetulembodiment in imparting motion to serially related time indicatingcharacter wheels, though the invention is not te be limited to thisservice. These wheels, as l have Aap plied the invention, constitute theload which is to be operated by the mechanism and to the wheel parts ofwhich load motion is to be communicated at predetermined intervals.These character wheels are, in

lthe preferred form of the invention, tixedly coupled with toothedwheels that are individual thereto and all of which wheels ared'esirably free to turn upon a common shaft. Each pair of coupled wheelsis associated with a self-acting device which, when free to operate,will actuate such pair of wheels through a predetermined distance or toa predetermined extent. The iirst pair of wheels, in the order of thesuccession ot the various pairs of wheels, is timed in its operation bya master timing device and each succeeding `pair of wheels is timed inits operation by the next preceding pair ot wheels which, after havingbeen actuated a number of steps or through a given range, serves torelease the self-acting mechanism et the next succeeding pair of wheelsto permit this self-acting mechanism te operate such succeeding pair ot'wheels.

In the preferred embodiment of the invention each preceding` pair ofwheels and the self-acting mechanism individual Athereto are effectivein storing power that is used in operating the next succeeding pair ofwheels when its self-acting mechanism is liberated'.

I will explain my invention more fully by reference to the accompanyingdrawings showing the preterred embodiment thereof as adapted to thepurpose of indicating the passage of time and in which drawings Figure lis a perspective view showing the external appearance of such embodimentet the invention; Fig. 2 is a sectional view on line 2 2 of Fig. a; Fig.3 is a perspective view of an operating` lever; Fig. 4f is a sectionalview on line i d of Fig. 2; Fig. 5 is a sectional view on line 5 5 ofFig. et; Fig. 6 is a sectional view on line 6 6 of Fig. Ll; Fig. 7 is asectional view ou line 7 7 of Fig. 4; Fig. 8 is a sectional viewvshowing alternative positions of some of the parts as they appear inFig. G; Fig. 9 is a perspective view erp an operating part; and Fig. 10is a perspecti ve view of some of the operating parts of the mechanism,other parts being emitted for the sake of clearness, this tigure beingalso somewhat diagrammatic to reveal more clearly the method ofoperation.

Like parts are indicated by similar chai acters of reference throughoutthe different figures.

rl `he character wheels l, 2, 3, and 4 constitute elements of one formwhich are to be actuated or controlled by the motion transmittingmechanism of my invention, it being understood that this mechanism isnot to be limited to any specific form et work that it is 'toaccomplish. The character wheels are illustrated as being included in atime measuring device in which the character wheel l serves to measurethe passage of tenths of a minute, that is periods of six seconds each;the character wheel 2 the passage of individual minutes; the characterwheel 3 the passage of ten minute periods; and the character wheel 4Lthe passage of individual hours. Arabic numerals or digits arecircumferentially distributed upon the peripheries of these wheels andare successively presented to iew through display openings individual tothe wheels in the inclosing casing 5 of the instrument as illustrated inFig. l. The wheel l has its periphery equally spaced o' into ten timemeasuring sections that are marked l, 2, 3, l, 5, G, 7, S 9 and 0 andserve., when presented to view before the displayopening individual tothe wheel l, to indicate which tenth of a minute has passed. When the 0on the wheel l appears before its display opening the passage of acomplete minute is indicated.

rThe character wheel 2 is marked similarly to the character wheel l butthe meanings of the digits upon its periphery are different from thoseof the digits on the periphery of the wheel l, each digit upon the wheel2 measuring the number of minutes that have passed. For example, figure8 appearing before the display opening individual to the wheel 2,indicates that eight minutes have passed. When the 0 upon the wheel 2appears before its display opening the indication is that ten minutesVhave passed. The

` wheel 2 should, therefore, remain idle during nine of the minutefraction measuring step by step movements of the wheel l but when thewheel l has moved the tenth step to complete its revolution and presentits 0 before its display opening the wheel 2 should move one step orone-tenth of its revolution to indicate the complete revolution of thewheel l and the passage of one minute of time.

The character wheel 3, which measures the passage of ten minute periods,indicates the passage of an hour when it has been turned a halfrevolution to present a 0 before its display openings, on which accountits periphery is subdivided into two equal main divisions orsemicircles, each main division being subdivided into six sections, thesections of each main division being marked l, 2, 3, 4f, 5, 0. In themovement of the wheel 3 through either of its hour measuringsemirevolutions it presents the digits appearing upon its peripherybefore the display opening individual to the wheel 3 so that one mayknow how many ten minute periods of the hour being measured havepassed.` Thus if the digit 5 upon wheel 3 is presented to view itindicates that five ten minute periods or fty minutes of the hour beingmeasured have passed. At the final step of the hour measuring Vhalfrevolution of the wheel 3 a O is presented to view to indicate that sixten minute periods (or one hour) have passed. rlhe digit l in the nexthalf circle of the wheel is next to be displayed and isY displayed whenthe first ten minute period of the next hour has passed.

The character wheel l remains idle during the time the wheel 3 isindicating the passage of the first five ten minute periods of an hourbut is moved when the sixth ten minute period has been measured in orderthat the wheel 4f may present the next digit before the correspondingdisplay opening to indicate the number of hours of a half day that havepassed. he wheel 4L is designed to make one complete revolution during ahalf day and. therefore the periphery o-f this wheel is divided intotwelve spaces numbered successively l to l2. ln Fig. l the time notedisone oclock a. 1n. or p. m. By way offurther example, reading from theleft to the right, if the figures 2, 5, 8, 9, appear before the fourdisplay openings the time noted would be fifty-eight minutes fifty-fourseconds past two a. m. or p. m.

By means of my invention l am enabled to effect the movement of thecharacter wheels at the predetermined intervals without the aid of acounter shaft and attendant gearing, each of the four character wheelspreferably ,having self-acting character wheel moving mechanism whoseoperation is de- Vferredby arresting or withholding mecha-1 nism whichis withdrawn at the appointed times to permit the self-acting mechanismto perform its function. Thus, by means, whose preferred form is laterto be specificallyset forth, the wheel l is permitted to operate onestep or a tenth of a revolution each time six seconds have passed, themechanism that operates the wheel l removing the restraint from theself-acting mechanism pertaining to wheel 2 when the wheel l hascompleted the ten steps of its revolution, then to permit the wheel 2 tomove onetenth of a revolution to denote the passage of an individualminute. In like manner the self-acting mechanism that operates the wheel2 removes the restraint from the selfacting mechanism pertaining towheel 3 when the wheel 2 has completed the ten steps of its revolution,then to permit the wheel 3 to move one-twelfth of a revolution (that isthrough one-sixth of its hour measuring cycle) to denote the passage ofa ten minute period. Thus also the self-acting mechanism that operatesthe wheel 3 removes the restraint from the self-acting mechanismpertaining to wheel 4: when the wheel 3 has completed the six steps ofits hour measur-g ing half revolution, then to permit the wheel 4 tomove one-twelfth of a revolution` to denote the passage of an individualhour.'i Each self-acting character wheel operating;L mechanismpertaining to the wheels l, 2 and 3, in addition to removing therestraint from the self-acting mechanism immediately succeeding thesame, also desirably accumulates power for operating such succeedingselfacting mechanism.

Gravity desirably serves to operate the character wheels, the weights 6,7, 8 and 9 being individual to and forming parts of self-actingmechanism that respectivelypertain to the wheels l, 2, 3 and et. Theweight 6 is shown as including an armature l() of an electro-magnetwhose energizing coil 11 is, in the embodiment of the invention underconsideration, included in circuit once each six seconds then to elevatethe weight, this circuit being broken immediately upon the elevation ofthe weight in order to permit the weight toperform its function.

The operating mechanism for the character wheel 1 includes the weight 6which has a horizontal axis of rotation and is provided with an arm l2upon .the outer end of which there is mounted a forwardly projecting'pin 13 that has a base 14 in the form of a truncated cone and which baseconstitutes a. cam for the purpose of properly imparting the finalmovement to the character wheel l during the latter' part of the descentof the weight 6. The self-act ing mechanism pertaining to the wheel 1also includes an actuating pawl 15 pivoted upon a pawl carrier 16adapted for engagement with the teeth of the ten toothed wheel orturning element 17 that is in fixed relation with the wheel 1 and,together therewith, is loosely mounted upon the shaft 1S anchored at itsends to the side walls of the casing 5 (and upon which shaft the othercharacter wheels and the toothed wheels pertaining thereto are alsoloosely mounted). The lower end of the pawl carrier 16 carries a roller19 that turns upon the pin 16 and the cam 14 as this end of the carrieris moved upwardly by the descending weight 6. During the periods ofinaction of the wheel 1 the wheel 17 is prevented from turning in onedirection by the trailing dog 2O and in the reverse direction bv theholding dog 21, which holding dog is constituted of a shoulder formed inthe pawl carrier 16, Each time the weight 6 is elevated in response tothe energization of the magnet 11, the pawl carrier 16 is permitted todrop to disengage the holding dog 21 from the wheel 17 and to bring thepawl 15 before a fresh tooth so that when the pawl carrier 16 iselevated upon the descent of the weight 6 the wheel 17 may be turnedone-tenth of a revolution to carry with it the wheel 1 to indicate thepassage of siX seconds of time, and when this movement has beencompleted the holding dog is positioned to coperate with the trailingdog 20 to prevent the wheel 17 from operating. ln order that thecharacter wheels may be adjusted to synchronism with correct time thepawl 16 has a handle 22 to enable it to be operated independently of themagnet.

The self-acting mechanism for moving the wheel 2 comes into play toindicate the passage of an individual minute as the wheel 1 completesrevolution. This self-acting mechanism includes the U-shaped lever 23that carries the Weight 7, which lever is free to turn upon a shaft 241anchored at its ends in the side walls of the casing 5. The upper andleft hand end of this U-shaped lever carries an actuating pawl 25adapted for successive engagement with the teeth upon the ten toothedwheel or turning element 26, this wheel being in Xed relation with thewheel 2. lVhen this lever is free to operate, the weight 7 will press itforwardly to move the actuating pawl 25 forwardly and thereby turn thewheel 26 onetenth of a revolution to effect corresponding movement ofthe character wheel 2 to denote the passage of a minute of time. Inorder that the weight 7 may function it is elevated indirectly by theweight 6 and directly by the cam 27 moving with the Wheels 1 and 17. Theperiphery of this cam engages a pin 2S carried by the left hand branchof the lever 23 whereby the lever is gradually moved to the rear, inopposition to the weight 7, in ten stages of operation, the cam drop 29being brought into register with this pin when the character wheel 1presents its O before its display opening in the casing 5 whereupon theweight 7 is released to permit it to effect the forward movement of thelever. Before the forwardly moving actuating pawl 25 may function theholding dog or pawl 30 (whose nose normally substantially fills the gapbetween adjacent teeth of the wheel 26) is removed from engagement withthis wheel 26, a result which is effected before the pawl 25 is broughtinto actuating engagement with said wheel. To this end the holding dogor pawl 30 carries a pin 31 upon its nose, this pin normally overlyingthe forward end of the dog releasing trip lever 32 which is pivotallymounted upon the forwardly extending arm 33 carried upon the lever theheavier tail end of the trip lever normally resting upon a lug 34 alsocarried by the lever 23. iVhen the lever 23 is moved to the rear thetrip lever 82 will move therewith but, being very light, will bedepressed at its forward end by its engagement with the pin 81 so as toescape the same. sequent upon the registry of the pin 2S with the camdrop 29, the blunt forward end of the trip lever 32 will abut againstthe adjacent side of the pin 31 and, as the lever 23 continues itsforward movement, will raise the holding dog 30 from engagement with thewheel 26 to free this wheel and permit it to be moved by the pawl 25during continued forward movement of the lever 23, the engagementbetween the pawl 25 and the tooth of the wheel 26 facing the same beingeffected immediately after the holding dog 30 has been removed fromengagement with the wheel. The range of forward movement of the lever23, following the release of the dog 30 from the wheel 26 and theoperating engagement of the pawl 25 with this wheel is such as to causethe wheel to move one-tenth of a revolution, the wheel 2 moving with thewheel 26 to present a new character before its display opening in thecasing 5, at which time the broad nose of the holding dog 30 falls intoa new space to prevent the rotation of the wheel 26 in either direction.It will be seen that it requires ten revolutions of the connected wheels1 and 17 to cause a single revolution of the wheel 2 during each ofwhich ten revolutions of the wheels 1 and 17 power is graduallyaccumulated in the power storage device 7 to operate the wheel 2 andwhile IV prefer to use a power storage device in which power isaccumulated consequent upon the operation of the preceding characterwheel 1 do not wish to be limited llVhen the weight 7 is released contothis method of supplying actuating influence to character wheels.

o The self-acting mechanism for moving the wheel 3 comes into play toindicate the passage of a ten'minute period as the wheel 2 completes arevolution. This self-acting mechanism includes the U-shaped lever 35that carries the weight 8, which lever is free to turn upon the shaft24.V rlhe upper end of the left hand branch of this U-shaped lever 35carries an actuating pawl 3G adapt` ed for successive engagement withthe teeth upon the twelve toothed wheel or turning element 37, thiswheelbeing in fixed relation with the wheel 3. i llfhen this lever isfree to operate the weight 8 will press it forwardly to move the pawl 36forwardly and thereby turn the wheel 37 one-twelfth of a revolution toeffect corresponding movement of the character wheel 3 to denote thepassage o-f a ten minute I period. In' order that the weight 3 mayfunction it is elevated indirectly by the weight 7 and directly by thecam 38 moving with the wheels 2 and 26. The periphery of this camengages a pin 39 carried by the upper end of the right hand branch ofthe lever 35 whereby the lever is gradually moved to the rear, inopposition to the weight 3, in ten stages of operation, the cam drop 40being brought into register with this pin when the character wheel 2presents its 0 before its displayY opening in the casing 5 whereupon theweight 8 is released to permit it to eifect the forward movement 0f thelever. Before the forwardly moving actuating pawl 36 may function theholding dog or pawl 4l (whose nose normally substantially fills the gapbetween adjacent teeth of the wheel 37 is removed from engagement withthis wheel, a result which is effected before the pawl 36 is broughtinto actuating engagement with'said wheel. To this end the holding dogor pawl 41 carries a pin 42 upon its nose, this pin normally overlyingthe forward end of a dog releasing trip lever 43 which is pivotallymounted upon the forwardly extending arm 44 carried upon the lever 35,the heavier tail end of the trip lever normally resting upon a lug 45also carried by the lever 35. l/Vhen Y the lever 35 is moved to the rearthe trip lever 43 will move therewith but, being very light, will bedepressed at its forward end by its engagement with the pin 42 so as toescape the same. When the weight 3 is released consequent upon theregistry of the pin 39 with the cam drop 40, the blunt forward end ofthe trip lever 43 will abut against the adjacent side of the pin 42 and,as the lever 35 continues its forward movement, will raise the holdingdog 41 from engagement with the wheel 37 to free this wheel and permitit to be moved by the pawl 36 during continued forward movement of thelever 35, the engagement between the pawl 36 and the tooth of the wheel37 facing the same being effected immediately after the holding dog 41has been removed from engagement withV the wheel. y The range of forwardmovement of the lever 35, following the` release of the dog` 4l from thewheel 37 and the operating engagement of the pawl 36 with this wheel issuch as to cause the wheel to move one-twelfth of a revolution oronesixth of the hour measuring cycle of `movement of the wheel 3 whichis one-half a revolution of this wheel, the wheel 3 moving with thewheel 37 to present a new character before its display openino' in thecasing 5 at which time the broad nose of the holding dog 4l falls into anew tooth space to prevent the rotation of the wheel 37 in eitherdirection. lt will be seen that it requires G revolutions of theconnected wheels 2 and V26 to cause a lia-lf (hour measuring)-revolution of the wheel 3, during each of which six revolutions of thewheels 3 and 37 power is gradually accumulated in the power storagedevice 8 to operate-thewheel The self-acting mechanism for moving thewheel 4 comes into play to indicate by each of the step by stepmovements of the wheel the passage of an hour, each such movement of thewheel 4 occurring each time the wheel 3 completes a half revolution.rlfhis selfacting mechanism includes a iii-shaped lever 46 that carriesthe weight 9, which lever is free to turn upon the shaft 24. The upperend of the left hand branch of this U-shapedV lever 46 carries anactuating pawl 47 adapted for successive engagement with the teeth uponthe twelve toothed wheel orfturning element 4S, this wheel being infixed relation with the wheel 4. vWhen this lever is free to operate theweight 9 will press it forwardly to move'the actuating pawl 47 forwardlyand thereby turn the wheel 43 onetwelfth of a revolution to e'ect thecorresponding movement of the character Vwheel 4 to denote the passageof an hour. in order that the weight 9 may function it is elevatedindirectly by the weight 3 and directly by the cam 49 moving with thewheels 3 and 37. The periphery of this cam engages a pin 50 carriedV bythe upper end of the right hand branch of the lever 45 whereby the leveris gradually moved to the rear, in opposition to the weight 9, in siXstages of operation, one or the other of the diametric'ally opposite camdrops l'being brought into register with this pin' when the characterwheel 3 presents one or the other of its zeros, which are diametricallyopposite, before its' display opening in the casing 5, Ywhereupon theweight 9 is released to permit it to effect the forward movement Aof thelever, which forward movement thus occurs twice during each completerevolution of the character wheel 3 and the toothed wheel 37 movingtherewith. Before the forwardly moving actuating pawl 47 may functionthe holdino dog or pawl 52 (whose nose normally substantially fills thegap between adjacent teeth of the wheel 48) is removed from engagementwith this wheel, a result which is effected before the pawl 47 isbrought into actuating engagement with said wheel. To this end theholding dog or pawl carries a pin 58 upon its nose, this pin normallyoverlying the forward end of a dog releasing trip lever 54 which ispivotally mounted upon the forwardly extending arm carried upon thelever 4G, the heavier tail end of the trip lever normally resting upon alug 56 also carried by the levery 46. Vhen the lever 46 is moved to therear the trip lever 54 will move therewith but, being very light, willbe depressed at its forward end by its engagement with the pin 53 so asto escape the same. When the weight 9 is released consequent upon theregistry of the pin with one of the cam drops 51, the blunt forward endof the trip lever 54 will abutt against the adjacent side of the pin 53and, as the lever 46 continues its forward movement, will raise theholding dog 52 from engagement with the wheel 48 to free this wheel topermit it to be moved by the pawl 47 during continued forward movementof the lever 46, the engagement between the pawl 47 and the tooth of thewheel 48 facing the same being effected immediately after the holdingdog 52 has been removed from engagement with the wheel. The range offorward movement of the lever 46 following the release of the dog 52from the wheel 48 and the operating engagement of the pawl 47 with thiswheel is such as to cause the wheel to move one-twelfth of a revolution,the wheel 4 moving with the wheel 48 to present a new character beforeits display opening in the casing 5, at which time the broad nose of theholding dog 52 falls into a new space to prevent the rotation of thewheel 48 in either direction. It will be seen that it requires sixrevolutions of the connected wheels 3 and 37 to cause a completerevolution of the wheel 4, during each half of which six revolutions ofthe wheels 3 and 37 power is gradually accumulated in the power storagedevice 9 to operate the wheel 4.

rIhe character wheels are positioned to indicate that the hour of oneoclock has just been reached, the actuating pawls individual to thevarious toothed wheels being illustrated in their foremost positionswith the holding dogs entering untoothed spaces betweenadjacent teeth.The oscillating U- shaped weighted levers and the weight actuated lever16 together with the actuating pawls mounted thereupon remain in thesepositions during predetermined intervals of time. The pawl l5 and dogs20 and 21 remain in their positions, shown clearly in Fig. 10, until theweight 6 is again operated, this time period being six seconds minus thesmall fraction of a second required in the movement of these partsduring the elevation and release of the weight 6. The pawl 25 remains inits illustrated position a similar period of time and remains at eachrearward step it takes consequent upon each of the ten step by stepmovements of the wheel 17 a similar period. The associate holding dog 30remains in its illustrated position a minute, minus the necessary timetaken for its movement and adjustment. rThe actuating pawl 36 remains inits illustrated position and at each rearward step it takes one minuteminus the time necessary for its movements, while the associate holdingdog 41 remains in its illustrated position a ten minute period minus thetime necessary for its movement. The actuating pawl 47 remains in itsillustrated position and at each rearward step it takes ten minutesminus the time necessary for its movements, while the associate holdingdog remains in its illustrated position one hour minus the timenecessary for its movement. rfhe character wheels remain in thepositions to which they are stepped periods of-time equal to therespective periods during which the dogs to which they are individualare in withholding or arresting engagement with the toothed wheelscontiguous thereto. This result is assured owing to the presence ofuntoothed spaces between the teeth of the toothed wheels and theemployment of holding dogs with noses that completely ll these spaces toprevent movement of the toothed wheels in either direction.

TWhile I have herein shown and particularly described one embodiment'ofmy invention and a specific purpose to which it may be applied, 1 do notwish to be limited to the precise details of construction shown nor toany particular use to which the invention may be put since theconstruction and adaptation of the mechanism may be varied withoutdeparting from the spirit of my invention.

Having thus described my invention I claim as new and desire to secureby Letters Patent the following:

1. A motion transmitting mechanism including a plurality of turningelements; means for turning one of these elements first; a swingingpower storing lever for turning the next turning element, which latterelement is in the form of a toothed wheel; a holding dog for engagingthe toothed wheel; a wheel tooth engaging actuating pawl carried by thelever and in lost motion relation to the wheel; a releasing elementoperated by the lever and in escaping relation to the holding dog whenthe lever is turned in one direction to store power and in liftingengagement with said dog when the lever movement isj` reversed; and acam operated by the first lopei'ated turning element for swinging thelevei' to store levei' operating power and which cam is adaptedfoi' es.-caping yconnection with the lever and is .brought to position to escapethe lever when the first operated turning element has operated.'Y A n 2.L motion vtransmitting mechanism in clu'ding a plurality of turningelements; means for t-urning one ofV these elements first; Y a.,swinging power storinglever for turning the nexty turning element, which`latter element is in the -form of a toothed Wheel', the lever beingprovided With means ivherebyit Vmay be turned by the first operatedturningelement lto raise its Weight and may thereafter escape` itsconnection with'this element to vpermit the lever to be operated bystored power ;Y a holding dog foi' engaging the toothed Wheel; a Wheeltooth engaging actuating paivl carriedv by the lever and in lost motionrelation to the Wheel; and a. releasing: element operatedy by the-leverand in ,escaping relation to the holding dog when the lever is Vturnedin one directionuto storepoiver'and inlifting engagement with said dogwhen the lever movement is reversed. Y

3. A motion transmitting mechanism including a plurality of turningelements; means for turning one of these elements first; a swinging`power storing lever for turning the next turning element, which lat- Vter element is in the form of a toothed Wheel,

the lever being provided with means Whereby it may be turned bythe irstoperated turning element to raise its Weight and may thereafter escapeits connection with this element to permit the leverto be operated bystored power.; avlrolding dog forengaging the toothed Wheel; a Wheeltooth engaging actuating. paivl carried by the lever; and a n releasingelement operated by the lever and in 'escaping relation to the holdingdog when the lever is turned in onedirection to store poiver Vand inlifting engagement with said dog when the lever movement is reversed. s4l. A motion transmitting mechanism includin a plurality of turningelements; means fer turning one of these elements first; an oscillatinglever for turning the next turning element, which latter element isinthe form of a toothed Wheel, tnelever being provided W'th meanswhereby it may be turnedv by the first operated turning element toprepare the lever.for'operation and may 191i. f 1 i SAMUEL THRASHEREVitnesses: Y Y MIRIAM T. CRAGG, Y I

Gr. L. CRAGG.

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Y v Washington, D. C.

